Invention Grant
- Patent Title: Hierarchical feedback of channel state information for wireless communication
- Patent Title (中): 用于无线通信的信道状态信息的分层反馈
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Application No.: US12849230Application Date: 2010-08-03
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Publication No.: US08379705B2Publication Date: 2013-02-19
- Inventor: Siddhartha Mallik , Alexei Y. Gorokhov
- Applicant: Siddhartha Mallik , Alexei Y. Gorokhov
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Florin C. Corie; Kenyon S. Jenckes
- Main IPC: H04B3/46
- IPC: H04B3/46

Abstract:
Techniques for sending hierarchical feedback of channel state information are described. In one design, a user equipment (UE) determines channel gain information for multiple cells selectable to transmit data to the UE. The UE also determines intra-cell relative phase information for at least one cell among the multiple cells. The UE reports the channel gain information and the intra-cell relative phase information. The channel gain information may include multiple quantized channel vectors for each of the multiple cells. The intra-cell relative phase information may indicate phase errors in the quantized channel vectors for each of the at least one cell. The UE may also determine and report other information. The UE may receive data from one or more cells among the plurality of cells. Each cell may transmit data based on at least one transmit vector determined based on the channel gain information and the intra-cell relative phase information.
Public/Granted literature
- US20110206106A1 HIERARCHICAL FEEDBACK OF CHANNEL STATE INFORMATION FOR WIRELESS COMMUNICATION Public/Granted day:2011-08-25
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